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This study was undertaken for clinical evaluation on the women with toxemia of pregnancy who was admitted to Yonsei University Medical Center from April, 1966 to December, 1970. By evaluating 583 cases of toxemia of pregnancy among total 8,253 deliveries, following results were obtained. 1. The incidence of toxemia was 7.06%. 2. According to the classification of American Committee on Maternal Welfare, the incidence of toxemia were as follows; Mild pre-eclampsia : 33.9% Severe pre-eclampsia : 43.8% Eclampsia : 17.5% Chronic hypertensive vascular diseases with superimposed acute toxemia : 3.9% Chronic hypertensive vascular diseases without acute toxemia : 0.5% Unclassified : 0.4% 3. Age distribution of toxemia was higest among 25-29 years range (42.5%). 4. 48.2% of toxemia was primipara and 51.8% of toxemia was multipara. 5. The numbers of toxemia were most in spring time (28.66%), but no definite significance on seasonal variation. 6. The distribution between clinical cases and private cases was higher in clinic cases (71.55). 7. Among the associated diseases with toxemia of pregnancy were 28 cases (4.8%), and abruptio placentae were 23 cases (3.9%). Other diseases were essential hypertension, polyhydramnios and diabetes mellitus. 8. The total numbers of deliveries were increased yearly, but there was no remarkable change on rate of antenatal visit. There was a tendency of decrease on incidence of pregnancy yearly. 9. The symptoms of toxemia of pregnancy disappeared on postpartum third day, in order of edema, hypertension, and proteinuria on each toxemia groups. 10. Perinatal mortality rate of toxemia was 121/1,000 live birth and it was very high value contrast to over all perinatal mortality rate (36.4/1,000 live births).
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